Coke-oven and door therefor.



F. W. G. SGHNIEWIND.

COKE OVEN AND DOOR THEREFOR.

APPLICATION FILED JUNE 6, 190a. RENEWED OUT. 22, 1910.

Patented Nov. 29, 1910.

IIWEIVTUR ITTOMIEY.

UNlTED sTA'rEs PATENT ()FFICE.

FREDERIG W. C. SCH1\TIEWIND, OF NEW YORK, N. Y.

COKE-OVEN AND DOOR THEREFOR.

Specification of Letters Patent. Patented N 29, 1910. Original application filed October 24, 1907, Serial No. 398,904. I

Divided and this application filed June 6,

1908, Serial No. 437,042. Renewed October 22, 1910. Serial No. 588,540.

State of New York, have invented a certain new and useful Improvement in Coke-Ovens and Doors Therefor, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

The present invention relates to the construction and arrangement of the coking retorts or chambers of coking ovens and particularly to the construction and arrangement of the removable top wall portions or doors through which the retorts are charged. This application is filed asa division of my prior co-pending application 398,904 filed October 24, 1907, and covers specifically one of the forms of apparatusdisclosed and claimed generically in my said prior application. I I I One object of the invention generically claimed in my said prior application and attained with the apparatus specifically claimed herein is the possession of a simple and effective oven door construction soarranged that when necessary it can be readily removed and can be readily put back and sealed in place, and which when sealed in place serves to effectually close the doorway against the air or gas leakage and to insulate the cokin chamber'against heat loss.

A second object is the provision of a suitable follower which is preferably formed by or connected to oneof the doors of the coking retort and which is arranged to bear againstthe coking body or charge during the coking operation and thereby improve either the coke formed or the volatile products recovered, or preferably to improve both the coke and the, volatile components of the coking operation. I The follower may improve the coke by compressing the charge during the coking operation and therebyproduce a denser and more uniform grade of coke. the follower may prevent the formation of spaces'in the hot portions of the retort in which the volatile products would otherwise collect and stagnate more or less. The

cracking of theflhydro-carbons resulting from their long exposure to high temperatures, which is thus avoided, results in a me- By serving as a displacing agent terial increase-in the value of the volatile products recovered in the coking operation.

The specific object of the present invention is the provision of a top door or removable top wall construction particularly I adapted for use with coals which change materially in bulk as they are converted into coke, though this construction may be used with any kind of coal. p

The top door constructioniby' which lobtain this specific object comprises an-w'outer sealing member and an inner follower member movably connected to the sealing member and filling the upper end of the coking chamber and free to rest on the charge and rise or fall with it as thecharge expands or shrinks durin the coking operation.

The various eatures of novelty which chaliiacterize the invention are pointed out wit and orming apart of this specification.

- For a better understanding of the invention,

however, reference may be had tothe accompanying drawings and descriptive matter in which apparatus in which the invention may be embodied are illustrated and described.

Of the drawings: Figure 1 is a sectional elevation of a coke oven through a coking chamber having doors at the top and: bottom. Fig. 2 is a section taken transversely to the section shown in- Fig. 1 and between the ends of the coking chamber.

In thedrawings: A represents the firebrick walls of the coke oven structure, and

form shown is long and deep but narrow.

The retorts may be heated in any suitable particularity in the claims annexed to 111 they manner, as. by heating fines B at the-sides of the retorts, which may be connected at their upper; and lower-- ends with burner;

chambers B and with the passages- B" running to regenerative chambers, as described and elaimed in my c'o-pending application, Serial No; 398,902, filed October 24 1907.

The retorts Bin thestructure s own are charged with coal throughtheir upper ends.

. and the coke formed is discharged through the lower ends. ofthe retorts. On this account each retort is provided with a; lemon-- -jects to form the seal. I may be held in place by any suitable means,

able top wall or 'door,'and a removable bot- .tom wall or door. The top wall or door comprises a body C of heat-resisting and insulating material, such as hollow fire-brick,

vided with a depending flange portion G which enters telescopic fashion in the space, groove or trough formed between the up wardly extending ribs E formed on the metal: rim member E which surrounds the upper end of the retort'B. The member C" and the member E and its ribs E thus unite to form a seal which may be packed with any suitable material. Longitudinal grooves are formed in the sides of tlie'tile forming the body G into which extend the inturned flanges of ametal cappieee C Rods C connected to the cap piece C extend freely through the sealing member C andhave eyes C at their upper ends for engagement by the operating devices.

The bottom door comprises an inner part D which extends to the upper edges of burner chambers B and maybe substantially like thepart C, and an under metal sunnorting part D on which the part D rests and may be secured by any suitable means as lugs D of the part D entering recesses in the tile or brick part" D. The bottom door, however, is provided with a flange D whichwith the body of the member D and the bottom plate D form the trough into which the flange F of the rim F pro- Each bottom door 'asfor instance by the pinion actuated bolts or rack bars F sliding in guides F to engage and disengage the ends of the yokes F secured to the under side of member D.

The mechanism for raising and lowering thetop and bottom walls-or doors 1n chargmg and discharg ng the retort forms no part of the present invention and for that reason is not illustrated or described herein.

In operatlon, when the oven is around,

i. e. the coke in it is ready to be discharged,

the lower door is removed and the coke formed is discharged in a proper manner,"

the door is then replaced and the seal completedby inserting the acking material in the space between the ribs D The upper door is then removed and the charge of coal to be coked is inserted and compacted up to the desired level. After this is done the coveror 'door is replaced and the seal is compl d y material between the ribsE.

' iflSome coals contract incoking while others' expand, the change in bulk depending on the amount of A some volatile pro ucts may accumulate above the insertionof the packing- The specific construction disclosed will operate satisfactorily with any degree of ex- "place and the proper seal formed between members C and E. The telescopicflanges at the top and bottom need overlap only enough to ,form an efi'ective seal. As the overlapping flanges need not move after the initial adjustment the seal packing may be formed of any suitable liquid, pulverized material, such as sand or coal dust, lime, clay or other luting material. The operation 'of packing the seals is a simple and inexpensive one. The sealin troughs can be readily cleaned after 830 1 seal breaking e and the masonry walls are not injured by thev adherence to them of luting material, as has frequently been the case with oven door constructions heretofore used.

In the oven shown the volatile products escape to suitable reservoirs or receptacles through the inclined vents B in the end walls of the retort, the lower vents being protected against clogging by the coal by means of the forebays B. As the cover body C rests on the top of the charge and practically fills the upper end of the retort there is no space in the retort in which the volatile products can collect, consequently as they are given off from the coal, they passlos at high velocity along the walls of the retort to the escape vents and are not overheated.

As shown the'movable follower portion or body C of the upper wall or door is made of substantial depth or thickness measured in a vertical direction, andin practice I make the vertical dimension of-the follower C great enough so that when the retort is properly charged, the upper portion of the body 6 will be maintained throughout the entlre coking operation at a level not below that of the top assages B, so that while the body 0, such accumulation is well above the hot part of the retort walls which" terminates practically with the level of the passages B The weight of the follower portionof the top door should of course be so proportioned as to impress the right pressure on the charge with the consequent avoidance of spongy coke.

In addition to the advantages pointed out above, it will be observed that the doors are mechanically well constructed to serve as the 18? 'movable walls of a horizontally elongated retort of large capacity which is charged through its upper ends along its entire length and from which the'coke formed may be moved out inan unbroken cake.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is;

1. A door for a coking retort open at thetop, said door comprising'an outer sealing member and an inner member movably connected thereto, formed of heat resisting material and adapted to fill the upper end of:

the retort and to rest on and rise and fall with the coking body during-the coking operation, said inner member being of such vertical depth that its upper edge may be maintained throughout the coking operation above the highly heated portions of theretort walls.

2. A door for a coking retort open at the top, said door comprising an-outer sealing member and an inner member of heat resisting material adapted to fill the upper end of the retort and rest on and rise and fall with the coking body durin the coking operation, and rods connecte to said inner ody and passing freely through said outer member forengagement by operating devices, said inner member bemg of such vertlcal depth that its upper edge may be maintained at all times above the hlghlyheated portions of the retort Walls.

3. In combination a coke oven structure having a coking chamber and a trough running around the upper end of said chamber and a removable top wall for said chamber comprising an upper sealing member havin g a flange entering said trough and a lower follower partition filling the upper end of said chamber and movably connected to said scaling member whereby said follower member may bear 011 the top of the charge during the charging operation and is free to rise or fall with it as the charge expands or shrinks, said inner member being of such vertical depth that its upper ed e may be maintained at all times above, the highly heated portions of the retort walls.

FREDERIC w. c. seinnrwmn.

Witnesses:

ROBERT C. METOALFE, D. W. KINCAID. 

